local os = require("os")

local deaddate = os.time({year = 2021, month = 07, day = 16, hour = 12, min = 00, sec = 00})
local nowdate = os.time()

local os_diff = os.difftime(nowdate, deaddate)
print(os_diff)
local diff = (nowdate - deaddate)/3600/24
print(diff)